Codfish Island / Whenua Hou is a small island () located to the west of Stewart Island in southern New Zealand. It reaches a height of close to the south coast. The island is home to Sirocco, an internationally famous kÃÂkÃÂpà Â, a rare species of parrot.
The island is one of many geographic features in New Zealand to have a dual place name, consisting of the English and MÃÂori names separated by a slash. The English name "Codfish Island" refers to the endemic blue cod, which is fished commercially in surrounding waters by trapping in baited pots.
The MÃÂori name "" means "new land", which dates back to the early days of European settlement in New Zealand. Responding to concerns and allegations that local MÃÂori women were being harassed by sealers on nearby Stewart Island, the local NgÃÂi Tahu rangatira, Honekai, designated Whenua Hou as the site of a new mixed race settlement where early Europeans could live with their MÃÂori wives under his protection. This encouraged sealers, such as Thomas Chaseland to move to Whenua Hou, alleviating the issues which their presence had caused on nearby Stewart Island and making Whenua Hou one of the first permanent mixed MÃÂori and European settlements in the region.
Codfish Island / Whenua Hou is home to southern short-tailed bats, kÃÂkÃÂ, fernbirds, red-fronted and yellow-crowned parakeet (both referred to as kÃÂkÃÂriki), Pacific black ducks and a recently introduced population of mà Âhua.
The island has been identified as an Important Bird Area by BirdLife International because of its significance as a breeding site for several species of seabirds, including Fiordland and yellow-eyed penguins, and mottled, Cook's and Whenua Hou diving petrels.
The first kÃÂkÃÂpà  were transferred to Codfish Island / Whenua Hou in 1987 from Stewart Island in order to provide a safe haven for the birds. Following the eradication of possums and rats in 1998 and the transfer of weka to other islands, the island became a predator-free bird sanctuary and the focus of kÃÂkÃÂpà  recovery efforts.
Codfish Island / Whenua Hou provides kÃÂkÃÂpà  with a home similar to their original home of Rakiura. As it holds the majority of the breeding population of critically endangered kÃÂkÃÂpà  it has become the centre for kÃÂkÃÂpà  recovery. In 2002, 24 kÃÂkÃÂpà  chicks fledged on the island. In 2009 and 2016, 33 and 32 chicks fledged respectively.
Its most famous resident is Sirocco, a kÃÂkÃÂpà  born in 1997; Sirocco became the government's "Official Spokesbird for Conservation" in 2010.
As of September 2021, 75 kÃÂkÃÂpà  reside on Codfish Island / Whenua Hou.
The island is visited by scientific researchers and Department of Conservation field workers along with volunteers working on conservation programs. The sole hut is located at Sealer's Bay in the northeast, with access by light aircraft or helicopter. The island is closed to casual visitors and unauthorised landing is prohibited.